Subject:
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Re: Is it possible to use LDView as POV-Ray previewer?
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Newsgroups:
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lugnet.cad.ray
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Date:
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Fri, 9 Dec 2005 07:17:26 GMT
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Viewed:
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8090 times
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In lugnet.cad.ray, Lars C. Hassing wrote:
> Well, yes, but could you try generating these parameters in stead:
> location
> sky
> look_at
> angle
OK, I got it working. Here’s my camera:
camera
{
#declare ASPECT = 4/3;
location < 0.0803394,-41.7274,-64.303 >
sky < -0.19039426700203063,-0.95564581262807657,0.22470225610612488 >
right ASPECT * < -1,0,0 >
look_at < 49.963588707634024,-64.281708407107288,-117.95945954024526 >
angle 57.8224
}
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Note: I discovered that I was wrong about the right vector. The look_at
statement rotates it around based on the sky vector. I’m not sure why it needs
to be -1 for x, though. My sky vector does point down, since “up” in LDraw is
-y. Assuming you allow user input of the aspect, I can just pass -4/3, but I’m
still confused about that.
Here’s what it looks like in LDView:
Here’s what it looks like in POV:
Both images are the same size, and they pretty much line up exactly,
pixel-for-pixel. (Note that POV-Ray refracts, so everything refracted through
the glass doesn’t line up pixel-for-pixel.)
--Travis
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Message is in Reply To:
 | | Re: Is it possible to use LDView as POV-Ray previewer?
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| (...) Well, yes, but could you try generating these parameters in stead: location sky look_at angle These should be adequate to fully describe the camera. ldglite uses them (URL) I have already made a -csky option. My impression has always been that (...) (19 years ago, 6-Dec-05, to lugnet.cad.ray)
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